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A large bright star whose hot core has used most of its hydrogen is a?
Wiki User
∙ 13y ago
Red giant.
The word "most" in the question isn't quite accurate. There is still a lot of hydrogen remaining in a star when the amount of helium becomes a problem. Hydrogen in the star is fused into helium, and the helium is at least roughly analogous to the ash in a wood fire; it is what's left over from the hydrogen fusion, and too much gets in the way.
When the proportion of helium gets too high - above about 50% is enough - the helium begins to interfere with the hydrogen fusion process. Without enough new heat generated by fusion, the star begins to collapse under the influence of gravity. The compression increases the temperature, and when the pressure and temperature gets high enough, the helium "ash" in the core becomes helium "fuel" for the Red Giant phase.
Wiki User
∙ 13y ago
Wiki User
∙ 14y agoWhen a star exhausts the vast majority of its Hydrogen fuel it forms a red giant or in the case of extremely large stars, hypergiants.
Wiki User
∙ 11y agoThe giant stars and the little stars runs out with their hydrogen, so I think you're talking about the giant stars.
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What is the process that generates energy in the core of the main sequence star?
The process is nuclear fusion of hydrogen. All stars at their main sequence converts hydrogen to helium giving large energy by during hydrogen atoms into helium nucliiFusion of hydrogen.
The energy source of stars is primarily associated with?
hydrogen fusion in the core. eventually runs out of hydrogen in the core and hydrogen fusion moves to the shell whilst the core contracts (star expands into red giant)...star leaves the main sequence.
What process gives the sun its energy?
Fusion at the core of the sun is the process that gives the sun its energy. Fusion is the same process found in the explosion of a hydrogen bomb.
Which planets have a metallic hydrogen core?
No known planet has a core of metallic hydrogen, but Jupiter and Saturn have layers of liquid metallic hydrogen surrounding their cores.
What type of stars are red giants?
These are stars that have exhausted their core's supply of hydrogen by switching to a thermonuclear fusion made of hydrogen in a shell that surrounds the core.
What is the process that generates energy in the core of the main sequence star?
The process is nuclear fusion of hydrogen. All stars at their main sequence converts hydrogen to helium giving large energy by during hydrogen atoms into helium nucliiFusion of hydrogen.
Why is the density of Jupiter is greater than that of Saturn?
We do not know exactly why but we can surmise that Jupiter has a rather large rocky core and also, being so large, some of the hydrogen it is made form could be in a dense, metallic state near the core
Does the sun and the earth have a hydrogen core?
There's hydrogen at the core of the sun - that's the sun's main fuel - but earth's core is mostly iron and nickel.
What is in the suns core?
helium and hydrogen
What is generated in the suns core?
Helium is generated in the core of our sun by nuclear synthesis .During the nuclear fusion inside the sun , hydrogen is fused into helium .the main products generated in this reaction are - Gamma ray photon, positron, neutrino, isotopes of hydrogen and helium and large amount of energy .
Is there hydrogen on io?
The interior of IO consist mainly of iron in the core and silicate rock forming the crust. On the surface sulphur dixoide ice is noted. The atmosphere is very thin and is also made of suphur dixoide.The planet does not have large amounts of hydrogen like Jupiter (which is almost entirely hydrogen) or even earth which has large amounts of hydrogen (in water: H2O)
The energy source of stars is primarily associated with?
hydrogen fusion in the core. eventually runs out of hydrogen in the core and hydrogen fusion moves to the shell whilst the core contracts (star expands into red giant)...star leaves the main sequence.
What is Saturn's core made of?
Saturn's interior certainly is quite hot. The core temperature probably is 21,000 °F. In fact, Saturn radiates more energy into space than it receives from the Sun. Saturn's core may be rocky and about the size of the planet Earth. Above that hard core may be a liquid metallic hydrogen layer and a molecular hydrogen layer. Various ices also may be present.
What process gives the sun its energy?
Fusion at the core of the sun is the process that gives the sun its energy. Fusion is the same process found in the explosion of a hydrogen bomb.
Does Jupiter have a dense core of hydrogen and helium?
No, it has a dense rocky core in the middle!!
How does the sun create energy it is core?
Nuclear Fusion from hydrogen in it core and helium
What is so important about the sun's core?
because it is bright!
